在笛氏齐次坐标的基础上，采用齐次向量的方法，建立二维射影坐标系。
It is shown that the 2_dimensional projective coordinate system can be constructed by homogeneous vector on the basis of the Descartes homogeneous coordinates.
首次在射影坐标系下对亏格为3的超椭圆曲线密码体制推导了无需求逆的明确公式。
For the first time, the inversion-free explicit formulae are derived for genus 3 HECC in projective coordinate system.
利用仿射坐标与射影坐标的映射关系，设计了一种有限素整数域上ECC快速算法，使得ECC在电子商务中实际安全应用成为可能。
A fast arithmetic of ECC based over finite prime field is designed by the map of between affine coordinates and projective coordinates. This make it possible that ECC's...
然后根据定位杆的基准坐标，得到该层的射影变换算子T；
Then, according to the base coordinate of locating rod, gain the coefficients of projective transformation.
单视图测量理论主要是利用了射影几何中的交比不变性来计算图像上点的三维坐标。
Single view metrology compute the 3d coordinate of a point based on the projective geometry's characteristic of cross-ratio invariability.
单视图测量理论主要是利用了射影几何中的交比不变性来计算图像上点的三维坐标。
Single view metrology compute the 3d coordinate of a point based on the projective geometry's characteristic of cross-ratio invariability.
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